Water desalination using ceramic membrane distillation

Larbot, A.; Gazagnes, Laetitia; Krajewski, Sebastian R.; Bukowska, Małgorzata; Kujawski, Wojciech

doi:10.1016/j.desal.2004.07.021

Cited by 162 publications

(73 citation statements)

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“…The contact angles obtained were mostly lower than the values in the literatures [24][25][26], which were in a range of 140-150 • C, because the membranes in other studies were coated with gamma alumina which has a higher number of hydroxyl groups. However, the membrane preparation method used in this study was relatively simple as both gamma and alpha alumina were mixed and spun at one time, compared to the other works in which the membranes were prepared by multi-step gamma-alumina coating techniques.…”

Section: Membrane Hydrophobicitycontrasting

confidence: 66%

“…[20,[22][23][24][25][26][27][28][29]. However, in this study, we are interested in fluoroalkylsilanes only as they were reported to be effective in the surface modification of flat-sheet and tubular membranes [25,27]. Fluoroalkylsilanes (FAS) are organosilanes which have hydrolysable groups and other hydrophobic ends in their structures.…”

Section: Introductionmentioning

confidence: 97%

“…1. Several factors including the number of functional groups in the FAS structure, the length of hydrophobic tails, grafting time, and grafting temperature play important roles in the surface grafting process [22,[24][25][26]30].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preparation and characterization of hydrophobic ceramic hollow fibre membrane

Koonaphapdeelert

2007

Journal of Membrane Science

138

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Section: Membrane Hydrophobicitycontrasting

confidence: 66%

Section: Introductionmentioning

confidence: 97%

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Preparation and characterization of hydrophobic ceramic hollow fibre membrane

Koonaphapdeelert

2007

Journal of Membrane Science

138

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“…The materials exhibit high surface energy and are therefore naturally hydrophilic, requiring functionalisation with hydrophobic groups in order to satisfy MD requirements [244,245]. Short aliphatic oligomers, alkoxy-silanes or fluoro-polymers can be easily grafted onto the surface of the membrane following a sol-gel approach, where the hydroxyl groups naturally present on the metal oxide are used to react with functional groups of the oligomers [242,[246][247][248].…”

Section: Ceramic Membranesmentioning

confidence: 99%

Advances in Membrane Distillation for Water Desalination and Purification Applications

Camacho

Dumée

Zhang

et al. 2013

Water

626

342

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Membrane distillation is a process that utilizes differences in vapor pressure to permeate water through a macro-porous membrane and reject other non-volatile constituents present in the influent water. This review considers the fundamental heat and mass transfer processes in membrane distillation, recent advances in membrane technology, module configurations, and the applications and economics of membrane distillation, and identifies areas that may lead to technological improvements in membrane distillation as well as the application characteristics required for commercial deployment. Keywordsa function of temperature, vapor pressure, and of the gas molecular mass K 0 membrane characteristic defined by Equation (9) Kn Knudsen number K(T) a function of temperature and molecular weight of the gas l mean free path of the molecules l m distance between parallel spacer fibres (m) LEP Limit Entry Pressure (kPa) M molecular mass (g/mol) M w molecular weights of water (g/mol) M a molecular weights of air (g/mol) n number of CNTs per unit cross section in bucky-paper P pressure in the air gap (kPa) half time to reach the maximum intensity-laser flash technique (s) t proportion of conductive heat (balance due to evaporative heat) loss through the membrane T mean temperature in the pores (K)

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“…However, the recognition that MD performance and stability (e.g. pore wetting) must improve to be commercially competitive with RO has seen a new range of membrane materials emerge including ceramics [4,5] and carbon nanotubes [6], as well as different morphologies [7,8]. Of these, ordered organosilica membranes have shown considerable promise [9].…”

Section: Introductionmentioning

confidence: 98%